Here's the deal. I have a mail server taking care of mail for my 4 domains; the first is used for virtually all mail, the second rarely used anymore, the third is virtually 100% spam the past year(?), and the fourth isn't in use (and never has been, so no spam).
What I'd like to do is to reject all mail to the third domain, but give humans a hint on how to contact me
. Right now this is what I get (I tried to send to a nonexistent address from gmail):
Delivery to the following recipient failed permanently:
Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider
for further information about the cause of this error.
The error that the other server returned was: 550 550 5.1.1 <firstname.lastname@example.org>: Recipient address rejected: User unknown in virtual mailbox table (state 14).
----- Original message -----
Since my username (xyz@) is the same for all domains, I could (or so I hope) change the reject message to give a hint to replace @olddomain.net with @realdomain.net and try again. I doubt any bots are going to catch on to that, but someone trying to reach me on an old address might.
Uh, long story short: see topic line.
Is this possible (in an easy enough way, too
Thanks in advance.